Optional Vec Parameters

[gembin]

#[derive(Debug, AttrArgs)]
struct MyArgs {
    foo: Option<String>,
    bar: Option<Vec<String>>,
}

Error

15 | #[derive(AttrArgs)]
   |          ^^^^^^^^ the trait `From<ParamVal>` is not implemented for `Option<Vec<std::string::String>>`
   |
   = help: the following implementations were found:
             <Option<&'a T> as From<&'a Option<T>>>
             <Option<&'a mut T> as From<&'a mut Option<T>>>
             <Option<T> as From<T>>
   = note: required because of the requirements on the impl of `Into<Option<Vec<std::string::String>>>` for `ParamVal`
   = note: required because of the requirements on the impl of `TryFrom<ParamVal>` for `Option<Vec<std::string::String>>`
   = note: required because of the requirements on the impl of `FromParameters` for `Option<Vec<std::string::String>>`
   = note: required by `from_parameters`